id:A058792 - OEIS Search Results

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Number of covers of an unlabeled n-set such that every point of the set is covered by exactly 5 subsets of the cover and that intersection of every 5 subsets of the cover contains at most one point.

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1, 5, 44, 966, 53535, 7043925 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Cover may include multiple occurrences of a subset. Also n-rowed binary matrices with distinct rows and all row sums 5.`
	LINKS	`Formula`
	CROSSREFS	`Cf. A050535, A050913, A058783-A058785.` `Sequence in context: A106273 A052803 A048940 this_sequence A113948 A096763 A003185` `Adjacent sequences: A058789 A058790 A058791 this_sequence A058793 A058794 A058795`
	KEYWORD	`more,nonn`
	AUTHOR	`Vladeta Jovovic (vladeta(AT)Eunet.yu), Nov 30 2000`

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.

AT&T Labs Research